Stacker with a vacuum

[Brett W]

Rule M12 States

M12 Only items listed under the PNEUMATICS section of the Kit list may be used to
store, generate or transmit compressed air or vacuum, with the following exceptions:
· Suction cups may be fabricated from legal Kit parts, as defined in rule K1 below.
· Tubing may be compressed in order to block the flow of air.
· Tubing may not be compressed in order to generate compressed air or vacuum.
· Only the allowed air cylinders may be used to generate vacuum.
WARNING!
You may only use pneumatic components from the pneumatics kit.
Custom-made pneumatic components (fittings, air cylinders, pumps,
valves, etc) are not allowed. Additional off-the-shelf pneumatic
components are not allowed.

My understanding is that you can only use the kit of parts stuff with the addition of those exceptins listed in rule M12. So if you can somehow make a vacuum with just those parts provided in the kit with out modifing them then go ahead and suck away. This is just my interpretatin you should double check with FIRST seeing as i am not an official FIRST guy. I hope that this helps